So I'm taking Dog to the switches and he's eating ghost people leftand right, but when I get there he won't accept the STAY dialog and keeps saying he's hungry. I tried adding food items to his inventory but that did nothing.

How do I feed him so he'll stay and pull the switches?

Play his masters voice to change him to "God" ( the audio memo you used to release him! )

This is what I always do. There's got to be a way to keed DOG there though, right?

I'll try it. Can't remember and ing-game reason that I'd do that.

I've never tried it, but with a high enough attribute or skill (I don't recall what it is) you can read the info plaque next to the switches, which gives you a prompt to the the effect that you understand it well enough to explain it someone. Then in dialogue with God, not Dog, there's an option along the lines of saying you could teach Dog to do it and get him to stay.

If he's already Dog, maybe just read the plaque (if you've got the attribute or skill req) and see if it opens a dialogue option to explain it to him.

There's a few Ghost People in the area that have lootable flesh when you kill them. You have to bring that back to Dog to keep him at the switches. Your quest log will update when you collect enough of it.